Figure 1.

Schematic presentation of myo-inositol and NaCl transport relationships. Under stress myo-inositol synthesis increases in leaf mesophyll (meso), remains constitutive in the vasculature (vasc), and decreases in the root, increasing translocation to the root. NaCl uptake in the root is matched by transport to the shoot, resulting in accumulation only in the shoot. As NaCl is accumulated in the shoot, provision of myo-inositol for pinitol synthesis should only be necessary. The increased flux toward the root suggested a second relationship between myo-inositol translocation and sodium uptake. CON, Control plants; STR, salt-stressed plants.